i did get dry rock when i start my tank, 1/2 dry 1/2 live, to be honest the dry rock after 6 months still having a lot of brow algae and white spots, i haven't see any good things from the dry rock, is cheaper but it take long time to cycle the tank. Ill say get some live rock, try craigslist or letgo, i got 120lbs of live rock for only $70, i find it on craigslist. i haven't see any bad creatures from the live rock.
Also i start with live sand, it had a little worms at the beginning but i have a purple dottyback and that guy is eating those worms, now i dont see any worm around.
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